AKR1C3通过Nrf-2/NF-κB通路保护心肌细胞免受低氧诱导的细胞亡
Wenlu Zhang1, Wei Tian2, Xin Xia1
1Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine. Shanghai 200025, China.
Acta biochimica et biophysica Sinica
|March 8, 2025
概括
阿尔多降解酶1C3 (AKR1C3) 通过减少氧化应激和炎症,保护心脏细胞免受低氧 (低氧) 引起的损伤. 这一发现为急性心肌梗塞 (AMI) 和其他心脏病提供了新的治疗点.
科学领域:
- 心脏病学 心脏病学
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 低氧诱导的亡是心脏病的关键因素,如心力衰竭和急性心肌梗塞 (AMI).
- 阿尔多降解酶1C3 (AKR1C3) 参与类固醇代谢和氧化还原反应,但其在AMI中的作用尚不清楚.
- 前列腺素失衡与冠状动脉事件有关,强调需要了解AKR1C3的功能.
研究的目的:
- 为了研究AKR1C3在缺氧诱导的心肌细胞损伤中的作用.
- 阐明AKR1C3影响AMI的分子机制.
主要方法:
- 在低氧条件下的AMI大鼠和小鼠模型中的H9C2和AC16细胞和心脏组织中检查了AKR1C3表达.
- 评估了AKR1C3过度表达和沉默对心肌细胞增殖,细胞活力,细胞亡,ROS水平,线粒体功能 (OCR,ATP生产) 的影响.
- 研究了涉及无素-蛋白酶体通路,Nrf-2,NF-κB,Bax和caspase-3信号传递的分子机制.
主要成果:
- 缺氧增加了心肌细胞亡和AKR1C3的表达.
- 过度表达AKR1C3增强了心肌细胞的增殖和活力,而沉默AKR1C3则产生了相反的效果.
- AKR1C3通过降低ROS,维护线粒体功能,调节Nrf-2/NF-κB轴来保护AKR1C3免受低氧诱导的亡.
结论:
- AKR1C3对缺氧诱导的心肌细胞损伤起着保护作用.
- AKR1C3通过减少氧化应激和通过Nrf-2抑制NF-κB信号通路来发挥其保护作用.
- AKR1C3代表了在AMI和相关心脏病中肌肉心脏保护的潜在治疗标.
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